Best Hardness Testing Equipment
The kit contains 8 different Mohs' Hardness Points, from Mohs 2 through Mohs 9.
Reviews
Find Best Price at Amazon"Fast delivery."
"Pleased with this purchase."
"They work.However the Mohs Hardness Card just floats in the box and the hardness plates aren't secured in place."
"Excellent tool."
"Very well made."
"It is very nice and I will be able to use it at my rock shop to help identify the rocks."
"It was just what I needed as I am a concrete tech."
"Received and functions as advertised and expected."
You receive: One bottle of 10k testing acid One bottle of 14k testing acid One bottle of 18k testing acid One bottle of 22k testing acid One bottle of silver testing acid One bottle of platinum testing acid Acid Test Stone This is a new PuriTEST acid testing stone This stone is used to test 10k, 14k, 18k, 22k platinum and silver Use this stone with acid solutions It measures approximately 1 7/8" x 1 7/8" x 3/16" (47 x 47 x 5 mm) 4" Scraper / Cutter also included. One bottle of each PuriTEST 10K, 14K, 18K, 22K, Platinum and Silver test acid.
Reviews
Find Best Price at Amazon"You simply draw your metal across a stone slate and then apply a drop of the appropriate liquid and watch for color changes that indicate the karat content of the metal."
"The ones I've used appear to work, aside from the one that tells you what a metal is.... it looks like it shows the same for all metals."
"With a bit of searching online, I was able to find the best ways to gather a sample without leaving noticeable abrasive marks and answered my question about whether a new rub of sample for the next stronger concentration( for gold testing) was more accurate."
"Sometimes these work as they should, but they sometimes don't."
"Yes it tested all my jewelry just fine but I don't feel they supplied enough directions and safety measures should always be standard on any acid."
"Tested all my gold and silver jewelry to see if the stamping were accurate and surprising all passed the test thanks to this product!"
"Great kit at an affordable price to identify precious metals in old jewelry."
"Hard to read."
The Deluxe Hardness Pick Set is a tool for Mineral Identification, including a set of Hardness Points for performing a 'scratch test' on an unknown mineral to determine its Hardness under the Mohs scale.
Reviews
Find Best Price at Amazon"Perfect price and delivery."
"This is a pleasantly evolved kit; well designed, conveniently arranged, expertly crafted."
"Expensive, but very useful."
"Excellent set... drawback is no field kit version."
"This is a quality made set."
"Quality set."
"Just what I expected!"
"Excellent product; delivery as promised; great customer service."
Best Roughness Tester
Specifications: Power Failure Memory: Don't worry about your power failure, with 20 groups data memory,makes your work more efficient; 1x196Feet laser measure, 2xAAA batteries, 1xUser’s manual, 1xPortable bag, 1xHand strap,1xGift box, 36 Months Warranty.
Reviews
Find Best Price at Amazon"It can figure square footage, volume and give you a straight line measurement within a 1/16"."
"At the same time if the measurement was wrong, you will not be able to delete it from the ongoing list of measurements - although if you keep in mind that the saving of ongoing measurements is an aid, it should not be of concern - to me it is not."
"Works fine, lightweight, accurate, Seems plenty rugged enough for home use."
"Have been testing this thing for accuracy , at least for up to 50m/160' it's good but according to instruction manual over time it'll become less accurate. (PITA). as i expect for a new item it should work correctly for the first 12 months, if it does not i will reduce the stars to match performance."
"If you want to measure an object where you have easy access to both ends, then the conventional tape measure or ruler works fine."
"This is so much faster than my old manual way of measuring, I don’t know how it works but I am just glad it works and saves me time."
"We are going to move and need measurements of walls, windows, areas where we can put furniture, etc."
"I liked using this, very easy to figure out the basics."
Best Surface Roughness Gauges
The Mitutoyo Surftest SJ-210 (178-561-02A) is a portable, handheld surface roughness tester with a 2.4-inch, color, backlit, LCD touch screen that displays in vertical or horizontal orientations, and left- and right-hand data views in 16 languages, measures 39 parameters, and has a micro-SD card that stores up to 10,000 results. A surf tester, also known as a profilometer, surface roughness tester, roughness gage, or surface finish gage, is a device used in metrology to inspect and measure surface roughness in shop, metalworking, manufacturing and quality control (QC) applications. Specifications Drive unit type. Standard. Detector type. 4mN measuring force, 5μm stylus tip radius. Standards met. JIS (1982, 1994, and 2001), ISO 1997, VDA, and ANSI. Measuring range. X-axis: .69 inches (17.5mm); Z-axis 14200 μin (-7900μin ~+6300μin)/360μin /.08μin (25μm / 0.002μm). Resolution. 14170μin /.8μin (360μm / 0.02μm), 4000μin /.2μin (100μm /0.006μm), 1000μin /.08μin (25μm / 0.002μm). Assessed profile. Primary profile (P), roughness profile (R), DIN4776 [Primary profile (P), Roughness profile (R), MOTIF (R): M-type. Parameters. Rv, Rsk, Rku, Rc, RPc, RSm, Rmax, Rz1max, RzJIS, Rppi, RΔa, RΔq, Rlr, Rmr, Rδ, ς, HSC, Rpm, tp, Htp, Ra, Ry, Rz, Rq, S, Sm, Pc, R3z, mr ©, Rt, Rp, Rk, Rpk, Rvk, Mr1, Mr2, A1, A2, Vo (customizable)(R, AR, Rx: M-type). Overall dimensions. 52.1 x 65.8 x 160 mm / 2.05 x 2.6 x 6.3 inches (H x W x D). Weight. 1.1 lb (500g) including display unit, drive unit, and detector. H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back. A surface roughness tester, also known as a profilometer, surtest, roughness gage, surface finish gage, or surf roughness tester, is a device used to inspect and measure surface roughness of flats, rounds, sloping planes, and recesses in machined, ground, or polished metal and non-metal surfaces. Surface roughness testing is a type of form measurement that identifies surface profiles such as grooves and recessions, commonly known as peaks and valleys, of a surface. A roughness tester traces a surface profile using a skid-type (contact-type) method with a tracer tip such as a diamond stylus and piezo-electric detection to calculate roughness. SJ-210 (178-561-02A) Surftest surface roughness tester Micro-SD card Precision roughness specimen Carrying case Instructions.
Reviews
Find Best Price at Amazon"I had to download the Mitutoyo PC program to compensate for this issue, but printing on a dedicated printer is much more efficient and can be used as a report for the client."
"Found a new one on Amazon for slightly more with Canadian warrantee, manual, test piece and quick delivery."
"It is easier to calibrate and use and can easily switch between units of measurement easily as well."
"Too bad the price was 300 dollars over the real price :(. The product is the best and nothing else will replaced it!"
"I have used a Mitutoyo roughness tester about 6 years ago at a previous job."
"the battery life is good, the display looks nice, the stroke is long compared to its competitors."
Best Surface Roughness Comparators
(22) Replicated machined surface finish specimens with examples of 6 different machining processes: lapped, ground, blanchard ground, shape-turned, milled and profiled ranging from 2 to 500µ".
Reviews
Find Best Price at Amazon"Also, the product sticker that they put on the back of the leather case doesn't remove easily, so it would be helpful if they selected a different adhesive and/or sticker material)."
"I work as a design engineer and used to borrow a fellow senior engineer's comparator when going to suppliers."
"The machining comparator does it's job."